The **Asian Pacific Mathematics Olympiad (APMO)** is an annual regional mathematics competition for high school students from countries and regions around the Asian and Pacific Rim. It is a **proof-based, 4-hour exam with 5 challenging problems**, modeled similarly to the International Mathematical Olympiad (IMO). Each participating country administers the contest locally on a specified date, then submits marked papers and scores to the central APMO Committee. Participation is **by national selection**, not individual registration: each country’s mathematical Olympiad organization (such as a national math society or Olympic committee) chooses its team of high school students, often from among top performers in that country’s own national math olympiad. The APMO provides students with rigorous training in problem solving, exposure to international competition standards, and a stepping stone toward deeper engagement in mathematics and higher-level competitions like the IMO. Awards (such as medals and honorable mentions) are given based on performance across all participating countries, offering recognition that is well regarded in academic and competitive mathematics circles.